/Engine/Plugins/Animation/ControlRig/Source/ControlRigEditor/Public/ControlRigSpaceChannelCurveModel.h
Get neighboring keys given the key handle
virtual void GetNeighboringKeys ( const [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) InKeyHandle, [TOptional](API\Runtime\Core\IO\TOptional)< [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) > & OutPreviousKeyHandle, [TOptional](API\Runtime\Core\IO\TOptional)< [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) > & OutNextKeyHandle ) const